View source for Euphorbia serpillifolia

{{Treatment/ID
|accepted_name=Euphorbia serpillifolia
|accepted_authority=Persoon
|publications={{Treatment/Publication
|title=Syn. Pl.
|place=2: 14. 1806
|year=1806
}}
|common_names=Thymeleaf sandmat
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Chamaesyce serpillifolia
|authority=(Persoon) Small
|rank=species
}}
|hierarchy=Euphorbiaceae;Euphorbia;Euphorbia sect. Anisophyllum;Euphorbia serpillifolia
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Euphorbiaceae]]</div><div class="higher-taxon"><small>genus</small>[[Euphorbia]]</div><div class="higher-taxon"><small>section</small>[[Euphorbia sect. Anisophyllum]]</div><div class="higher-taxon"><small>species</small>[[Euphorbia serpillifolia]]</div></div>
|volume=Volume 12
|mention_page=page 253, 256
|treatment_page=page 287
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> annual, with slender taproot. <b>Stems</b> prostrate to ascending, often mat-forming, 7–35 cm, glabrous, pilose, or villous. <b>Leaves</b> opposite; stipules distinct, divided nearly to base into 3–5 subulate to filiform segments, these sometimes 2-fid toward apex or laciniate, 0.7–2.1 mm, glabrous; petiole 0.5–1 mm, glabrous, villous, or pilose; blade ovate, oblong, elliptic, or obovate, 3–13 × 2–7 mm, base asymmetric, rounded to oblique, margins usually entire in proximal 1/2 and serrulate in distal 1/2, rarely serrulate nearly to base, apex obtuse or truncate, surfaces often with red spot in center, not papillate, glabrous, villous, or pilose; weakly 3-veined from base, usually only midvein conspicuous. <b>Cyathia</b> solitary or in small, cymose clusters at distal nodes or on congested, axillary branches; peduncle 0.4–1.7 mm. <b>Involucre</b> obconic, 0.6–1.1 × 0.6–1 mm, glabrous, villous, or pilose; glands 4, yellow to pink, usually oblong to reniform, 0.1 × 0.2–0.3 mm; appendages white to pink, oblong or flabellate, rarely absent, (0–)0.1–0.2 × (0–)0.3–0.4 mm, distal margin entire or shallowly lobed. <b>Staminate</b> flowers 5–20. <b>Pistillate</b> flowers: ovary glabrous, villous, or pilose; styles 0.3–0.4 mm, 2-fid 1/2 length. <b>Capsules</b> broadly ovoid to oblate, cocci not elongated nor terminating in empty portion, 1.4–1.9 × 1.5–2, glabrous, pilose, or villous; columella 1.2–1.6 mm. <b>Seeds</b> pink, light brown, or grayish, ovoid to narrowly ovoid, 4-angled in cross section, 1–1.4 × 0.6–0.9 mm, smooth to dimpled or rugose, or with faint transverse ridges that do not interrupt abaxial keel.</span><!--

-->{{Treatment/Body
|distribution=Alta.;B.C.;Man.;N.B.;Ont.;Que.;Sask.;Ariz.;Calif.;Colo.;Fla.;Ga.;Idaho;Ill.;Iowa;Mich.;Minn.;Mo.;Mont.;N.Dak.;N.H.;N.Mex.;N.Y.;Nebr.;Nev.;Okla.;Oreg.;Pa.;S.Dak.;Tex.;Utah;Wash.;Wis.;Wyo.;Mexico;South America.
|discussion=<p>Subspecies 2 (2 in the flora).</p><!--
--><p><i>Euphorbia serpillifolia</i> is variable, especially in regard to seed sculpturing. L. C. Wheeler (1941) documented and discussed this variation, suggesting that within the United States and Canada the taxon could be further divided into various taxa. However, Wheeler refrained from actually proposing names and commented that further study was needed. The authors concur with Wheeler and maintain a broad delimitation of the species, pending a detailed study of variation throughout its range. Otherwise indistinguishable hairy plants are treated as <i></i>subsp.<i> hirtula</i>. In contrast to the widespread typical subspecies, <i></i>subsp.<i> hirtula</i> ranges from northern Baja California, Mexico, to central California. In this region the two subspecies sometimes grow together.</p><!--
--><p>The spelling of the specific epithet follows the original publication of the name and contrasts with the often-used variant serpyllifolia.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Stems and leaves glabrous.
|[[Euphorbia serpillifolia subsp. serpillifolia|Euphorbia serpillifolia subsp. serpillifolia]]
|-id=key-0-1
|1
|Stems and leaves pilose or villous.
|[[Euphorbia serpillifolia subsp. hirtula|Euphorbia serpillifolia subsp. hirtula]]
|}
</div></div><!--

-->{{#Taxon:
name=Euphorbia serpillifolia
|authority=Persoon
|rank=species
|parent rank=section
|synonyms=Chamaesyce serpillifolia
|basionyms=
|family=Euphorbiaceae
|distribution=Alta.;B.C.;Man.;N.B.;Ont.;Que.;Sask.;Ariz.;Calif.;Colo.;Fla.;Ga.;Idaho;Ill.;Iowa;Mich.;Minn.;Mo.;Mont.;N.Dak.;N.H.;N.Mex.;N.Y.;Nebr.;Nev.;Okla.;Oreg.;Pa.;S.Dak.;Tex.;Utah;Wash.;Wis.;Wyo.;Mexico;South America.
|reference=None
|publication title=Syn. Pl.
|publication year=1806
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V12/V12_452.xml
|genus=Euphorbia
|section=Euphorbia sect. Anisophyllum
|species=Euphorbia serpillifolia
}}<!--

-->[[Category:Treatment]][[Category:Euphorbia sect. Anisophyllum]]